IHI Performance OEM+ VF48 Turbo - Subaru EJ

New IHI Performance OEM+ VF48 Turbo - Subaru EJ

IHI Performance OEM+ VF48 Turbo - Subaru EJ

Our Price USD 1,430.00
Our Price CAD 1,930.50


The IHI Performance VF48 is a stock appearing OEM+ turbo upgrade for Subaru’s 2.5L EJ25 engine. It’s a perfect option for someone who craves a mild boost in power over the OEM turbo but doesn’t want to sacrifice quality or reliability. Manufactured by IHI, Subaru’s factory turbo partner, this turbo spools early like a stock VF39, VF41, or VF48, but IHI utilized an advanced compressor wheel design to move more air, providing an OEM+ solution for any driver looking to boost the performance of their Subaru.

The IHI turbo upgrade shares the same reliability and fitment as an OEM Subaru turbo, meaning it connects perfectly to stock components and fittings. Expect pump gas power gains of 400+hp with improved throttle response and boost modulation.

- Precise machined aluminum forged big compressor wheel
- An Easy Power Boost - Increase EJ25 engine output 300-400+hp. Rally-Ready homologated
- Predictable Performance - OEM reliability. Improved throttle response and control
- Simple Install - Bolts directly to EJ25 stock components

Compressor Specifications:
- Compressor Type: Precisely machined aluminum forged big compressor wheel for quicker spool
- Compressor Wheel OD (exducer): 62mm (Stock STI is 60mm)
- Compressor Wheel Inducer: 48.32mm (Stock STI is 46.5mm)

Compressor Housing Specifications:
- Inlet: OEM 04+ STI
- Outlet: OEM 04+ STI

Turbine Specifications:
- Turbine Housing Size: P18
- Turbine Inducer: 53mm
- Turbine Exducer: 48mm

- This IHI turbo upgrade is designed specifically for the Subaru EJ25 engine
- Stock components will bolt right up to this turbo, meaning no other modifications are needed.
- If the turbocharger unit you select has the adjustable turnbuckle actuator, please use a precise boost gauge and fasten the nuts of the turnbuckle on the actuator rod when adjusting.
- To control boost pressure, you will need a boost controller or solenoid which is sold separately.
- You must run premium pump gas or e85 once this turbo is installed and tuned.
- Subaru highly recommends purchasing a new Banjo Bolt and Screen (SUB 14445AA090) with any installation of a new turbo.​
- This turbo may also work for other Subaru models of different years, but additional modifications may be required.
- Gaskets are excluded

2004-2006 Subaru STI (OEM TURBO UNIT MARKING: VF39) (OEM P/N: 14411AA572)
2007-2007 Subaru STI (OEM TURBO UNIT MARKING: VF43) (OEM P/N: 14411AA620)
2008-2019 Subaru STI (OEM TURBO UNIT MARKING: VF48) (OEM P/N: 14411AA700)

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IHI Performance OEM+ VF48 Turbo - Subaru EJ

IHI Performance OEM+ VF48 Turbo - Subaru EJ

IHI Performance OEM+ VF48 Turbo - Subaru EJ

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